Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/handle/123456789/4857
Title: The complete assignment of 1H- and 13C-NMR of prenylated xanthones from Tovomita spp. (Guttiferae).
Authors: Nagem, Tanus Jorge
Werle, Alceni Augusta
Carvalho, Mário Geraldo de
Mesquita, Antônio Augusto Lins
Keywords: Tovomita
Guttiferae
Prenylated xanthone
Issue Date: 1997
Citation: NAGEM, T. J. et al. The complete assignment of 1H- and 13C-NMR of prenylated xanthones from Tovomita spp. (Guttiferae). Journal of the Brazilian Chemical Society, São Paulo, v. 8, n. 3, p. 285-288, 1997. Disponível em: <http://www.jbcs.sbq.org.br/imagebank/pdf/v8n3a18.pdf>. Acesso em: 02 fev. 2015.
Abstract: A 1,6-dihidroxy-5-(3-metilbut-2-enil)-6’,6’-dimetil-pirano(2’,3’;7,8)- 6”,6”- dimetilpirano (2”,3”;3,2)xantona e a 1,3,6-trihidroxi-6’,6’-dimetil-pirano(2’,3’;7,8)-2,5- di-(3-metilbut-2-enil)xantona tiveram seus deslocamentos químicos de hidrogênio e carbono-13 atribuídos de forma inequívoca, com base nas informações obtidas através dos espectros de RMN de 1H[1D e 2D(1H-1H-COSY) e de correlação heteronuclear 1H-13C-COSY[nJCH(n = 1, 2 e 3)]. Estes da dos ainda foram confirmados utilizando-se a técnica de NOE diferencial. The 1H-and 13C-NMR spec tral data of 1,6-dihydroxy-5-(3-methylbut-2- enyl)-6’,6’-dimethyl-pyrano(2’,3’;7,8)-6”,6”-dimethyl-pyrano(2”,3”;3,2)xanthone and 1,3,6-trihydroxy-6’,6’-dimethyl-pirano(2’,3’;7,8)-2,5-di-(3-methylbut-2-enyl)xanthone have been un am big u ously as signed by the anal y sis of homonuclear (1H-1H-COSY) and heteronuclear [1H-13C-COSY: mod ulated with 1JCH and nJCH (n = 2 and 3, COLOC)] shift-correlated and NOE dif ference spectra.
URI: http://www.repositorio.ufop.br/handle/123456789/4857
metadata.dc.identifier.doi: http://dx.doi.org/10.1590/S0103-50531997000300018
ISSN: 1678-4790
metadata.dc.rights.license: O periódico Journal of the Brazilian Chemical Society permite que a UFOP deposite uma cópia em formato eletrônico dos artigos de seus alunos e professores publicados neste periódico no Repositório Institucional. Contato via e-mail em 13 set. 2013.
Appears in Collections:DEQUI - Artigos publicados em periódicos

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